Improvement in steam hoisting-derricks



I 2 Sheets-Sh'eet 1.

O. O. LYMAN. Steam Hoisting Derrick.

No. 22 2,142. Patented Dec. 2,1879.

NJ'ETERS, PHOTO-LITHOGRAFHER. WASHXNGYQN. o. c.

2 Sheets-Sheet 2.

0. 0. LYMAN. Steam Hoisting Derrick.

No. 222,142. Patented- Dec. 2, 1879.

&2

1NVENTOR ix (k m m ATTORNEYS AFMER. WASHINGION, n c.

IMPROVEMENT IN STEAM HOlSTlNG-DERRlCKS.

Specification forming part of Letters Patent No, 222,142, dated December2, 1879; application filed April 12, 1879.

To all whom it may concern Be it known that I, OHEs'rEn G. LYMAN, ofCleveland, in the county of (Juyahoga an d State of Ohio, have inventedcertain new and useful Improvements in Steam Hoisting-Derricks and I dohereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichit pertains to make and use it, refstep; also, in locating upon theelevated platform the stand of the person who operates the derrick;also, in locating upon said elevated platform, made substantially asdescribed, the engine, boiler, and machinery for operating the derrick;also, in combining with a derrick weighing apparatus, formedsubstantially as described, adapted to weigh the material hoisted as itis suspended from .the crane; also, in providing for the lengthening andshortening of the crane-arm and a corresponding adjustment of theweighing apparatus; also, in passing the water-pipe through which wateris conveyed to the boiler up through the center of the spar, togetherwith suitable stuff:

ing-box joint at the base, wherebythe crane might be turned withoutdisturbing the water-pipe connections; also, in a truck-frame below,adapted to transmit the strain as near as may be directly to thecorners.

In the drawings, Figure 1 is a view, in elevation, of a steamhoistingcrane embodying the principles of my invention. Fig. 2represents a planview of the same. Fig. 3 is a View looking down uponthe supporting-frame with the crane removed. Fig. 4 is a separate Viewof the hollow spar, showing the'waterpipe connections and the centerbearin g and suspended step. Fig. 5 is a separate view,

representing the lever mechanism.

suitable uprights,

A is a frame-work, provided with suitable truck-wheels A, adapted totravel upon a suitable track, B. The frame A is provided with whichsupport a circular rack, O.

l) is an elevated platform, consisting of a strong frame-work, rigidlyattached, so as to move with the spar E. The spar has a .central bearingat E, adjacent to the elevated platform, and its lower end rests in astep, E which is preferably suspended by rods E.

F is the crane-arm, and F is a suitable brace.

Beneath the elevated platform are suitable bearing-wheels D, which, in agreat degree, support the weight and cause the spar to move easilywithout binding in its bearings.

G is a suitable boiler, which furnishes steam to an engine, G, which inturn drives the shaft G On the shaftG is a sleeve, H, which has aconical surface at each end adapt ed' to mesh with a correspondingbevel-wheel below, so that should the sleeve be shifted longitudinally,so'as to bring one of its shoulders against the bevel-wheel, it wouldcause that wheel to move in one direction, while if the sleeve isshifted in the opposite direction, so as to bring its other conicalshoulder to bear 'upon the opposite portion of the bevel-wheel,

it would cause the wheel to move in the opposite direction, as indicatedin Fig. 2 r of the drawin gs.

The bevel-wheel is shown at I, and is fixed to the topof a verticalshaft, I, which is provided with a pinion, 1 This pinion, in turn,meshes with the circular rack (l, at the top of the frame A. i i

It will'thus be seen that while the engine drives the shaft G always inthe same direction, yet by shifting the sleeve H the crane is, by thefrictional gears H I, caused to move around the axis of the spar as acenter, and that this movement is unlim.ited-that is, the crane may movearound the complete circle .and in either direction.

J J are collars fixed rigidly to the shaft G K is a shaft, to which arerigidly attached friction-wheels K. The shaft K is journaled at its endseccentrically within a sleeve, K which sleeve, in turn, is jourualedwithin sta ion;

a 4 seams Now it is apparent that by pressing the hand-lever L in onedirection the frictionwhecls K will be forced against the collars J,

causing a contact between them sufficient to revolve the shaft K.

The shaft K is enh rged at its central portion, so as to constitute thedrum, upon which the hoisting chain or rope is so wound that when thecollars J and K are in contact the shaft K is turned in a direction towind up or lift the weight. WVhen the weight is lifted to a suitableheight the frictional contact is broken by shifting the lever L in theother direction by a quick movement, which, at the same time the contactis broken, forces the frictional wheels K against the brake-shoes it.Then, when the crane is turned to the proper point for delivering theload, the load may be eased down by means of the lever L, by graduallyrelieving the frictional contact .between the friction-wheels K" and thebrake-shoes.

N is a lever, adjacentto the lever L, so that both may be within reachof the operator. The lever N is connected with a rod, N, which operatesthe lever N, which lever, in turn, shifts the sleeve H so as to obtainits frictional bearing upon cit-her side of the bevel frictional pinionI, so that the operator may thereby govern the turning of the crane.

The sleeve H may be so shifted that neither one of its beveled surfacesshall bear against the bevel-wheelin other words, so that it shall beout of gear therewith, and that would beits position whenever the cranewas at rest and the engine runnin In order that the crane may be turnedquickly to any point and then quickly stopped, a brake is provided inthe form of a strap, P, surrounding the edge of the beveLwheel I. Thisstrap is attached to the frame at p, and at its free end to a rod, P.This rod, in turn, is connected with the arm P of the shaft P which isgoverned by a .foot-treadle, I, so that at any time the braking-strap Bmay be closed upon the bevel-wheel I by pressing the foot upon thefoot-treadle P, so that it is apparent that an operator may stand withinreach of the levers L and N, and by means of them may govern the raisingand lowering of the weight,

the turning of the derrick, and the stopping of the revolution throughmeans of the braketreadle.

On the shaft G is a loose sleeve, Q, which may at any instant, by asuitable clutch, Q, be thrown in or out of gear with the shaft G by anysuitable lever Q Upon the drum Q, is coiled a suitable rope or chain,the end of which passes down and out between suitable rollers R, It, andR and thereby the weight to be lifted might be drawn up within reach ofthe crane. So, also, instead of passing the rope out between the rollersR 1t, &c., it

'ver V the lever bein 7 7 might be passed down over the roller S andbeneath the roller T at the base of the frame. Then by attaching therope to any suitable distant fastening the whole derrick might be causedto traverse along the tracks B, thereby changing its position. If it isdesired to move the derrick in the opposite direction, all that isnecessary will be to turn the crane one hundred and eighty degrees, thenpass the rope beneath the pulley at the base of the frame upon the otherside.

U is an adjustable section of the cranearm, whereby the arm may belengthened or shortened. U is suitablecrank-and-gear mechanism forrunning out or drawing back the adjustable sect-ion U. U are suitablepieces which serve as stops when the arm. may have been adjusted to theproper length. The crane end of the lift-ingchain or cable, instead ofbeing attached to the end of the crane-arm, is attached to thehorizontal arm of a bell-lepreferably provided with a notch and poisedupon an edge, e. A rod connects the upright arm of this lever with theupright arm of a corresponding lever, V. The horizontalarm of this leveris inturn connected with the upright or lifting rod V of a suitableweighing-scale mechanism, V whereby the weight suspended at the end ofthe crane is measured upon the scales V 1 also prefer to attach to thescales a registerin g device, V, such as has been heretofore employed byme, so that if it is designed to raise with a bucket given weights of,say, one ton each, the weighing-scale may be. set to measure tonweights, and the fractions above or below a ton may be indicated uponthe indicator V* without the necessityof shitting the weight along thescales. So, also, I may or may not employ in the same connectioncounting mechanism for tallying the number of weights lifted.

is a water-pipe for supplying water to the boiler. This pipe is passedup the center of the spar and provided with a joint and stuffing boXbelow, whereby the crane may be turned without disturbing the water-pipeconnections at its base.

I do not limit myself strictly to this last construction, because it isapparent that the boiler may be located within the frame A beneath oroutside the frame, in which case steam would be passed up in like mannerthrough the center of the spar to the engineabove. I prefer, however, tolocate the boiler as shown in the drawin s, whereby it acts. as acountenpoise to the crane-arm and the weight that is being lifted.

As before explained, the spar has a bearing at or near the stationaryplatform, at which point I prefer that it shall bear upon frictioinrollers or friction-balls located in a suit-able channel; but at itsbottom I prefer. that it shall rest within a step, E which step shall besuspended by suitable rods E said rods passing through ears in the seatabove, and

I; R I governed by nuts, in order that the length of the rods may be sogaged as to cause the spar to divide its bearing equally between the upper bearing and the lower step.

The end of the weighing-chain may be attached either to the arm or tothe weighing apparatus. If to the former, then the crane will operatewithout operating. the weighingscales; but by simply changing the end ofthe chain to the weighing apparatus attachment the apparatus is adaptedfor weighing the weights hoisted; or there may be an extra length ofchain attached near its end, which, being hooked upon the weighingattachment, would transfer the weight to that point without thenecessity of breaking the permanent attachment to the crane-arm, asindicated in the drawings.

What I claim is 1. In a steam-derrick, an elevated platform adapted toreceive the engine and operative parts of machinery, substantially asand for the purposes described.

2. A hoistingderrick provided with a hearing intermediate between thetop and bottom of the spar, and in connection therewith astep forreceiving the bottom of the spar, substantially as and for the purposesdescribed.

3. The combination, with the lifting chain or cable, of the bell-cranklevers or their equivalents and the connecting-rods,whereby thebell-cranks are caused to operate the weighing apparatus and measure theweight of the article suspended by the chain, substantially as and forthe purposes described.

4.. The combination, with a hoisting-derrick, of an elevated rotaryplatform which turns with the crane-arm, said platform provided with aboiler and engine located thereon as a counterpoise to the crane-arm,substantially as set forth.

5. In a steam hoisting-derrick, the combination, with the adjustablesection of the cranearm, of the crank-and-gear mechanism which runs outand draws back said section, substantially as set forth.

6. The combination, with the weighing apparatus, of an adjustableconnection between the two bell-cranklevers, in order that the saidconnection may be made to conform to the increased or decreased lengthto which the crane-arm may be adjusted, substantially as and for thepurposes described.

7. The combination, with a steam-engine, of friction gear mechanism forrevolving the same about the axis of the spar, substantially as and forthe purposes described.

8. In a steam hoisting-derrick, the adjustable sleeve with reversedconical heads governed by a lever, in combination, with the bevel-wheelI on the pinion-shaft, the whole constituting a frictional-gearmechanism for transferring the crane, substantially as and for thepurposes described.

9. The combination, with a steam-derrick, of frictionalgear mechanism,substantially as described, for raising and lowering the weights.

10. The drum Q, adapted to be turned in or out of gear with the shaft Gtogether with its cable, whereby a load may be brought within reach ofthe crane-arm, or the derrick itself be moved along its track,substantially as and for the purposes described.

11. The combination, with the bevel-wheel on the shaft of thedriving-pinion I, of the brake-band governed by foot or other treadle,substantially as and for the purposes described.

12. The combination, with the drive-shaft G of two friction-collarsadapted to mesh with a friction-collar at each end of the liftingdrum,substantially as and for the purposes described.

13. The combination, with the crane-arm and the weighing apparatus, ofhooks or attachments for the end of the lifting-chain, whereby saidchain may be at will either attached rigidly to the arm or to theweighing apparatus, substantially as and for the purposes described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

CHESTER C. LYMAN.

